original description
Nasonov, N. V. (1917). Sur la faune des Turbellaria de Finlande I. [In Russian]. <em>Bulletin de l'Academie de Sciences de Russie.</em> 6(14): 1095–1112. With three plates.
page(s): 1108-1111 [details] 
additional source
Rogozin, A.G. (1992). Topographical anatomy of the protonephridial vessel system in Rhabdocoela (Turbellaria). 2. Typhloplanidae (Opistominae, Typhloplaninae, Mesostominae). <em>Zoologicheskii Zhurnal.</em> 71(3): 23–32. [details] Available for editors 
additional source
Rogozin, A.G. (2017). Olisthanella obtusa (Schultze, 1851) and opistomum arsenii Nasonov, 1917, two species of typhloplanoid Turbellaria (Neorhabdocoela) new to the fauna of the Urals. <em>Zoologicheskii Zhurnal.</em> 96(11): 1319–1322. [details] Available for editors 
basis of record
(of Opistomum arseni) Rogozin, A.G. (1992). Topographical anatomy of the protonephridial vessel system in Rhabdocoela (Turbellaria). 2. Typhloplanidae (Opistominae, Typhloplaninae, Mesostominae). <em>Zoologicheskii Zhurnal.</em> 71(3): 23–32. [details] Available for editors 
From editor or global species database